bug#11517: 24.0.97; invalid compilation error regexp for maven

[Stefan Monnier]

> Example maven error from:
>   [ERROR] /Users/cinsk/hello.java:[651,96] ';' expected
>          ^^^^^^^^^^^^^^^^^^^^^^^^

Hmm... the current maven regexp doesn't make much sense (it has
a special [0-9]* at the beginning which doesn't seem to make any
difference, other than make the regexp more complex, obviously).
But more importantly, it does not try to match a "[ERROR]".

The current tests we have just include:

    ;; maven
    ("FooBar.java:[111,53] no interface expected here"
     1 53 111 "FooBar.java")

>   (maven "^\\[ERROR\\] +\\(.+?\\):\\[\\([0-9]+\\),\\([0-9]+\\)\\].*"
>          1 2 2)

This doesn't match the string we have in our current test, tho.
The patch below seems to fix it for your example.  Please try it out,


        Stefan


=== modified file 'lisp/progmodes/compile.el'
--- lisp/progmodes/compile.el   2012-05-18 01:46:20 +0000
+++ lisp/progmodes/compile.el   2012-05-21 03:44:37 +0000
@@ -209,7 +209,7 @@
     ;; due to matching filenames via \\(.*?\\).  This might be faster.
     (maven
      ;; Maven is a popular free software build tool for Java.
-     "\\([0-9]*[^0-9\n]\\(?:[^\n :]\\| [^-/\n]\\|:[^ 
\n]\\)*?\\):\\[\\([0-9]+\\),\\([0-9]+\\)\\] " 1 2 3)
+     "\\([^ \n]\\(?:[^\n :]\\| [^-/\n]\\|:[^ 
\n]\\)*?\\):\\[\\([0-9]+\\),\\([0-9]+\\)\\] " 1 2 3)
 
     (jikes-line
      "^ *\\([0-9]+\\)\\.[ \t]+.*\n +\\(<-*>\n\\*\\*\\* 
\\(?:Error\\|Warnin\\(g\\)\\)\\)"